Eric Dumazet 3137663dfb net: avoid synchronize_rcu() in dev_deactivate_many ... dev_deactivate_many() issues one synchronize_rcu() call after qdiscs set to noop_qdisc. This call is here to make sure they are no outstanding qdisc-less dev_queue_xmit calls before returning to caller. But in dismantle phase, we dont have to wait, because we wont activate again the device, and we are going to wait one rcu grace period later in rollback_registered_many(). After this patch, device dismantle uses one synchronize_net() and one rcu_barrier() call only, so we have a ~30% speedup and a smaller RTNL latency. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Patrick McHardy <kaber@trash.net>, CC: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2011-05-22 21:01:20 -04:00
..
Kconfig	networking: NET_CLS_ROUTE4 depends on INET	2011-05-19 19:23:28 -04:00
Makefile	pkt_sched: QFQ - quick fair queue scheduler	2011-04-04 11:10:24 -07:00
act_api.c	net,rcu: convert call_rcu(tcf_common_free_rcu) to kfree_rcu()	2011-05-07 22:50:48 -07:00
act_csum.c	net_sched: cleanups	2011-01-19 23:31:12 -08:00
act_gact.c	net_sched: cleanups	2011-01-19 23:31:12 -08:00
act_ipt.c	net_sched: cleanups	2011-01-19 23:31:12 -08:00
act_mirred.c	net_sched: cleanups	2011-01-19 23:31:12 -08:00
act_nat.c	net_sched: cleanups	2011-01-19 23:31:12 -08:00
act_pedit.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
act_police.c	net,act_police,rcu: remove rcu_barrier()	2011-05-07 22:50:54 -07:00
act_simple.c	net_sched: cleanups	2011-01-19 23:31:12 -08:00
act_skbedit.c	net_sched: cleanups	2011-01-19 23:31:12 -08:00
cls_api.c	net_sched: cleanups	2011-01-19 23:31:12 -08:00
cls_basic.c	net_sched: cleanups	2011-01-19 23:31:12 -08:00
cls_cgroup.c	net_sched: cleanups	2011-01-19 23:31:12 -08:00
cls_flow.c	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6	2011-01-20 00:06:15 -08:00
cls_fw.c	net_sched: cleanups	2011-01-19 23:31:12 -08:00
cls_route.c	ipv4: Remove flowi from struct rtable.	2011-03-04 21:55:31 -08:00
cls_rsvp.c	[NET_SCHED]: Remove unnecessary includes	2007-07-10 22:16:41 -07:00
cls_rsvp.h	net_sched: cleanups	2011-01-19 23:31:12 -08:00
cls_rsvp6.c	[NET_SCHED]: Remove unnecessary includes	2007-07-10 22:16:41 -07:00
cls_tcindex.c	net_sched: cleanups	2011-01-19 23:31:12 -08:00
cls_u32.c	cls_u32: fix sparse warnings	2011-02-22 11:22:33 -08:00
em_cmp.c	net_sched: cleanups	2011-01-19 23:31:12 -08:00
em_meta.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
em_nbyte.c	net_sched: cleanups	2011-01-19 23:31:12 -08:00
em_text.c	net_sched: cleanups	2011-01-19 23:31:12 -08:00
em_u32.c	net_sched: cleanups	2011-01-19 23:31:12 -08:00
ematch.c	net_sched: cleanups	2011-01-19 23:31:12 -08:00
sch_api.c	pkt_sched: Kill set but unused variable 'protocol' in tc_classify()	2011-05-19 18:32:55 -04:00
sch_atm.c	net_sched: cleanups	2011-01-19 23:31:12 -08:00
sch_blackhole.c	pkt_sched: Add qdisc->ops->peek() implementation.	2008-10-31 00:45:55 -07:00
sch_cbq.c	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2011-01-24 14:09:35 -08:00
sch_choke.c	sch_choke: add choke_skb_cb	2011-02-24 22:11:57 -08:00
sch_drr.c	net_sched: accurate bytes/packets stats/rates	2011-01-20 23:31:33 -08:00
sch_dsmark.c	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2011-01-24 14:09:35 -08:00
sch_fifo.c	net_sched: reduce fifo qdisc size	2011-03-03 11:10:02 -08:00
sch_generic.c	net: avoid synchronize_rcu() in dev_deactivate_many	2011-05-22 21:01:20 -04:00
sch_gred.c	net_sched: cleanups	2011-01-19 23:31:12 -08:00
sch_hfsc.c	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2011-01-24 14:09:35 -08:00
sch_htb.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
sch_ingress.c	net_sched: factorize qdisc stats handling	2011-01-10 16:07:54 -08:00
sch_mq.c	net_sched: TCQ_F_CAN_BYPASS generalization	2011-01-21 16:26:09 -08:00
sch_mqprio.c	mqprio: cleanups	2011-02-23 14:11:32 -08:00
sch_multiq.c	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2011-01-24 14:09:35 -08:00
sch_netem.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
sch_prio.c	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2011-01-24 14:09:35 -08:00
sch_qfq.c	pkt_sched: QFQ - quick fair queue scheduler	2011-04-04 11:10:24 -07:00
sch_red.c	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2011-01-24 14:09:35 -08:00
sch_sfb.c	net_sched: SFB flow scheduler	2011-02-23 14:05:11 -08:00
sch_sfq.c	inet: constify ip headers and in6_addr	2011-04-22 11:04:14 -07:00
sch_tbf.c	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2011-01-24 14:09:35 -08:00
sch_teql.c	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2011-01-24 14:09:35 -08:00